text: //
  //  NSArray+SX_Safe.h
  //  dfpo
  //
  //  Created by mac on 2017/3/22.
  //  Copyright © 2017年 dfpo. All rights reserved.
  //
  
  #import <Foundation/Foundation.h>
  
  @interface NSArray <ObjectType> (SXPodCategory_SX_Safe)
  
  - objectForKey:(NSString *)aKey;
  - (ObjectType)safe_ObjectAtIndex:(NSUInteger)index;
  
  @end
  
  @interface NSMutableArray <ObjectType> (SXPodCategory_SX_Safe)
  
  - (void)safe_addObject:(ObjectType)anObject;
  
  @end
  
  @interface NSDictionary<__covariant KeyType, __covariant ObjectType>(SX_Safe)
  
  - (void)safeSetObject:(ObjectType)anObject forKey:(KeyType <NSCopying>)aKey;
  
  @end
  